MATLAB Psychtoolbox Windows 7

[lucubration <foo...@ya...>]

Hello all. 

I have been having issues with MATLAB, namely Psychtoolbox. Unfortunately,
Psychtoolbox does not work properly on Windows 7, due to an issue with
PsychHID. However, when commanding MATLAB to run the action "help psychhid"
I am told: 

" On Linux and Windows, not all PsychHID subfunctions are implemented, as
  certain functionality can be handled in a better or different way on
  those systems. USB-HID low-level access, and USB low-level access is
  implemented though.
 
  MS-Windows: You must manually install the libusb-1.0.dll library on your
  system to use PsychHID. A working version is contained in the
  Psychtoolbox/PsychContributed folder. More recent versions may be
  downloaded from the official project website:
 
  http://libusb.org/wiki/windows_backend"

Furthermore, when commanding MATLAB via the command, KbCheck(-1), I am told: 

" KbCheck(-1)
INFO: Initial invocation of the PsychHID mex file failed.
INFO: Most likely a required DLL is not installed in your system, e.g.,
libusb-1.0.dll
INFO: I will now check if this is the culprit and work around it. To avoid
future warnings,
INFO: please copy the 64-Bit libusb-1.0.dll from the PsychContributed\x64
folder into your C:\WINDOWS\system32\ 
INFO: folder or a similarly appropriate place. You can get a fresher copy of
libusb-1.0.dll from 
INFO: http://libusb.org/wiki/windows_backend if you want to stay up to date.
INFO: Retrying now, may fail...

ans =

     0"
My question is, what exactly am I meant to download to allow psychhid to
properly function? Where would I find it? Thank you for reading. 



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